X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fflash%2Fnor%2Fstm32f1x.c;h=af7d9ea3970034cf04d446d12625cbb5bfb0231e;hp=9a3d459b592dabf5c011c5477170d1e8f8356888;hb=bee7836b6a155b89f454b64f626a497c767f13f6;hpb=9cc733ae312dd79471f4cc5116f675116d5176b3
diff --git a/src/flash/nor/stm32f1x.c b/src/flash/nor/stm32f1x.c
index 9a3d459b59..af7d9ea397 100644
--- a/src/flash/nor/stm32f1x.c
+++ b/src/flash/nor/stm32f1x.c
@@ -21,7 +21,7 @@
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
@@ -102,25 +102,36 @@
#define KEY1 0x45670123
#define KEY2 0xCDEF89AB
+/* timeout values */
+
+#define FLASH_WRITE_TIMEOUT 10
+#define FLASH_ERASE_TIMEOUT 100
+
struct stm32x_options {
uint16_t RDP;
uint16_t user_options;
+ uint16_t user_data;
uint16_t protection[4];
};
struct stm32x_flash_bank {
struct stm32x_options option_bytes;
- struct working_area *write_algorithm;
int ppage_size;
int probed;
bool has_dual_banks;
/* used to access dual flash bank stm32xl */
uint32_t register_base;
+ uint16_t default_rdp;
+ int user_data_offset;
+ int option_offset;
+ uint32_t user_bank_size;
};
static int stm32x_mass_erase(struct flash_bank *bank);
static int stm32x_get_device_id(struct flash_bank *bank, uint32_t *device_id);
+static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
+ uint32_t offset, uint32_t count);
/* flash bank stm32x 0 0
*/
@@ -134,10 +145,13 @@ FLASH_BANK_COMMAND_HANDLER(stm32x_flash_bank_command)
stm32x_info = malloc(sizeof(struct stm32x_flash_bank));
bank->driver_priv = stm32x_info;
- stm32x_info->write_algorithm = NULL;
stm32x_info->probed = 0;
stm32x_info->has_dual_banks = false;
stm32x_info->register_base = FLASH_REG_BASE_B0;
+ stm32x_info->user_bank_size = bank->size;
+
+ /* the stm32l erased value is 0x00 */
+ bank->default_padded_value = 0x00;
return ERROR_OK;
}
@@ -196,7 +210,7 @@ static int stm32x_wait_status_busy(struct flash_bank *bank, int timeout)
return retval;
}
-int stm32x_check_operation_supported(struct flash_bank *bank)
+static int stm32x_check_operation_supported(struct flash_bank *bank)
{
struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
@@ -223,7 +237,8 @@ static int stm32x_read_options(struct flash_bank *bank)
if (retval != ERROR_OK)
return retval;
- stm32x_info->option_bytes.user_options = (uint16_t)0xFFF8 | ((optiondata >> 2) & 0x07);
+ stm32x_info->option_bytes.user_options = (optiondata >> stm32x_info->option_offset >> 2) & 0xffff;
+ stm32x_info->option_bytes.user_data = (optiondata >> stm32x_info->user_data_offset) & 0xffff;
stm32x_info->option_bytes.RDP = (optiondata & (1 << OPT_READOUT)) ? 0xFFFF : 0x5AA5;
if (optiondata & (1 << OPT_READOUT))
@@ -277,13 +292,13 @@ static int stm32x_erase_options(struct flash_bank *bank)
if (retval != ERROR_OK)
return retval;
- retval = stm32x_wait_status_busy(bank, 10);
+ retval = stm32x_wait_status_busy(bank, FLASH_ERASE_TIMEOUT);
if (retval != ERROR_OK)
return retval;
/* clear readout protection and complementary option bytes
* this will also force a device unlock if set */
- stm32x_info->option_bytes.RDP = 0x5AA5;
+ stm32x_info->option_bytes.RDP = stm32x_info->default_rdp;
return ERROR_OK;
}
@@ -316,59 +331,24 @@ static int stm32x_write_options(struct flash_bank *bank)
if (retval != ERROR_OK)
return retval;
- /* write user option byte */
- retval = target_write_u16(target, STM32_OB_USER, stm32x_info->option_bytes.user_options);
- if (retval != ERROR_OK)
- return retval;
-
- retval = stm32x_wait_status_busy(bank, 10);
- if (retval != ERROR_OK)
- return retval;
-
- /* write protection byte 1 */
- retval = target_write_u16(target, STM32_OB_WRP0, stm32x_info->option_bytes.protection[0]);
- if (retval != ERROR_OK)
- return retval;
-
- retval = stm32x_wait_status_busy(bank, 10);
- if (retval != ERROR_OK)
- return retval;
-
- /* write protection byte 2 */
- retval = target_write_u16(target, STM32_OB_WRP1, stm32x_info->option_bytes.protection[1]);
- if (retval != ERROR_OK)
- return retval;
-
- retval = stm32x_wait_status_busy(bank, 10);
- if (retval != ERROR_OK)
- return retval;
-
- /* write protection byte 3 */
- retval = target_write_u16(target, STM32_OB_WRP2, stm32x_info->option_bytes.protection[2]);
- if (retval != ERROR_OK)
- return retval;
-
- retval = stm32x_wait_status_busy(bank, 10);
- if (retval != ERROR_OK)
- return retval;
+ uint8_t opt_bytes[16];
- /* write protection byte 4 */
- retval = target_write_u16(target, STM32_OB_WRP3, stm32x_info->option_bytes.protection[3]);
- if (retval != ERROR_OK)
- return retval;
-
- retval = stm32x_wait_status_busy(bank, 10);
- if (retval != ERROR_OK)
- return retval;
+ target_buffer_set_u16(target, opt_bytes, stm32x_info->option_bytes.RDP);
+ target_buffer_set_u16(target, opt_bytes + 2, stm32x_info->option_bytes.user_options);
+ target_buffer_set_u16(target, opt_bytes + 4, stm32x_info->option_bytes.user_data & 0xff);
+ target_buffer_set_u16(target, opt_bytes + 6, (stm32x_info->option_bytes.user_data >> 8) & 0xff);
+ target_buffer_set_u16(target, opt_bytes + 8, stm32x_info->option_bytes.protection[0]);
+ target_buffer_set_u16(target, opt_bytes + 10, stm32x_info->option_bytes.protection[1]);
+ target_buffer_set_u16(target, opt_bytes + 12, stm32x_info->option_bytes.protection[2]);
+ target_buffer_set_u16(target, opt_bytes + 14, stm32x_info->option_bytes.protection[3]);
- /* write readout protection bit */
- retval = target_write_u16(target, STM32_OB_RDP, stm32x_info->option_bytes.RDP);
- if (retval != ERROR_OK)
- return retval;
-
- retval = stm32x_wait_status_busy(bank, 10);
- if (retval != ERROR_OK)
+ uint32_t offset = STM32_OB_RDP - bank->base;
+ retval = stm32x_write_block(bank, opt_bytes, offset, sizeof(opt_bytes) / 2);
+ if (retval != ERROR_OK) {
+ if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE)
+ LOG_ERROR("working area required to erase options bytes");
return retval;
+ }
retval = target_write_u32(target, STM32_FLASH_CR_B0, FLASH_LOCK);
if (retval != ERROR_OK)
@@ -387,11 +367,6 @@ static int stm32x_protect_check(struct flash_bank *bank)
int num_bits;
int set;
- if (target->state != TARGET_HALTED) {
- LOG_ERROR("Target not halted");
- return ERROR_TARGET_NOT_HALTED;
- }
-
int retval = stm32x_check_operation_supported(bank);
if (ERROR_OK != retval)
return retval;
@@ -481,7 +456,7 @@ static int stm32x_erase(struct flash_bank *bank, int first, int last)
if (retval != ERROR_OK)
return retval;
- retval = stm32x_wait_status_busy(bank, 100);
+ retval = stm32x_wait_status_busy(bank, FLASH_ERASE_TIMEOUT);
if (retval != ERROR_OK)
return retval;
@@ -595,6 +570,7 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
struct target *target = bank->target;
uint32_t buffer_size = 16384;
+ struct working_area *write_algorithm;
struct working_area *source;
uint32_t address = bank->base + offset;
struct reg_param reg_params[5];
@@ -604,17 +580,14 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
/* see contrib/loaders/flash/stm32f1x.S for src */
static const uint8_t stm32x_flash_write_code[] = {
- /* #define STM32_FLASH_CR_OFFSET 0x10 */
/* #define STM32_FLASH_SR_OFFSET 0x0C */
/* wait_fifo: */
0x16, 0x68, /* ldr r6, [r2, #0] */
0x00, 0x2e, /* cmp r6, #0 */
- 0x1a, 0xd0, /* beq exit */
+ 0x18, 0xd0, /* beq exit */
0x55, 0x68, /* ldr r5, [r2, #4] */
0xb5, 0x42, /* cmp r5, r6 */
0xf9, 0xd0, /* beq wait_fifo */
- 0x01, 0x26, /* movs r6, #1 */
- 0x06, 0x61, /* str r6, [r0, #STM32_FLASH_CR_OFFSET] */
0x2e, 0x88, /* ldrh r6, [r5, #0] */
0x26, 0x80, /* strh r6, [r4, #0] */
0x02, 0x35, /* adds r5, #2 */
@@ -636,7 +609,7 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
0x01, 0x39, /* subs r1, r1, #1 */
0x00, 0x29, /* cmp r1, #0 */
0x02, 0xd0, /* beq exit */
- 0xe3, 0xe7, /* b wait_fifo */
+ 0xe5, 0xe7, /* b wait_fifo */
/* error: */
0x00, 0x20, /* movs r0, #0 */
0x50, 0x60, /* str r0, [r2, #4] */
@@ -647,13 +620,13 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
/* flash write code */
if (target_alloc_working_area(target, sizeof(stm32x_flash_write_code),
- &stm32x_info->write_algorithm) != ERROR_OK) {
+ &write_algorithm) != ERROR_OK) {
LOG_WARNING("no working area available, can't do block memory writes");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
};
- retval = target_write_buffer(target, stm32x_info->write_algorithm->address,
- sizeof(stm32x_flash_write_code), (uint8_t *)stm32x_flash_write_code);
+ retval = target_write_buffer(target, write_algorithm->address,
+ sizeof(stm32x_flash_write_code), stm32x_flash_write_code);
if (retval != ERROR_OK)
return retval;
@@ -662,10 +635,9 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
buffer_size /= 2;
buffer_size &= ~3UL; /* Make sure it's 4 byte aligned */
if (buffer_size <= 256) {
- /* if we already allocated the writing code, but failed to get a
+ /* we already allocated the writing code, but failed to get a
* buffer, free the algorithm */
- if (stm32x_info->write_algorithm)
- target_free_working_area(target, stm32x_info->write_algorithm);
+ target_free_working_area(target, write_algorithm);
LOG_WARNING("no large enough working area available, can't do block memory writes");
return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
@@ -685,13 +657,13 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
buf_set_u32(reg_params[4].value, 0, 32, address);
armv7m_info.common_magic = ARMV7M_COMMON_MAGIC;
- armv7m_info.core_mode = ARMV7M_MODE_ANY;
+ armv7m_info.core_mode = ARM_MODE_THREAD;
retval = target_run_flash_async_algorithm(target, buffer, count, 2,
0, NULL,
5, reg_params,
source->address, source->size,
- stm32x_info->write_algorithm->address, 0,
+ write_algorithm->address, 0,
&armv7m_info);
if (retval == ERROR_FLASH_OPERATION_FAILED) {
@@ -712,7 +684,7 @@ static int stm32x_write_block(struct flash_bank *bank, uint8_t *buffer,
}
target_free_working_area(target, source);
- target_free_working_area(target, stm32x_info->write_algorithm);
+ target_free_working_area(target, write_algorithm);
destroy_reg_param(®_params[0]);
destroy_reg_param(®_params[1]);
@@ -727,11 +699,7 @@ static int stm32x_write(struct flash_bank *bank, uint8_t *buffer,
uint32_t offset, uint32_t count)
{
struct target *target = bank->target;
- uint32_t words_remaining = (count / 2);
- uint32_t bytes_remaining = (count & 0x00000001);
- uint32_t address = bank->base + offset;
- uint32_t bytes_written = 0;
- int retval;
+ uint8_t *new_buffer = NULL;
if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
@@ -739,75 +707,76 @@ static int stm32x_write(struct flash_bank *bank, uint8_t *buffer,
}
if (offset & 0x1) {
- LOG_WARNING("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset);
+ LOG_ERROR("offset 0x%" PRIx32 " breaks required 2-byte alignment", offset);
return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
}
+ /* If there's an odd number of bytes, the data has to be padded. Duplicate
+ * the buffer and use the normal code path with a single block write since
+ * it's probably cheaper than to special case the last odd write using
+ * discrete accesses. */
+ if (count & 1) {
+ new_buffer = malloc(count + 1);
+ if (new_buffer == NULL) {
+ LOG_ERROR("odd number of bytes to write and no memory for padding buffer");
+ return ERROR_FAIL;
+ }
+ LOG_INFO("odd number of bytes to write, padding with 0xff");
+ buffer = memcpy(new_buffer, buffer, count);
+ buffer[count++] = 0xff;
+ }
+
+ uint32_t words_remaining = count / 2;
+ int retval, retval2;
+
/* unlock flash registers */
retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY1);
if (retval != ERROR_OK)
- return retval;
+ goto cleanup;
retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_KEYR), KEY2);
if (retval != ERROR_OK)
- return retval;
+ goto cleanup;
- /* multiple half words (2-byte) to be programmed? */
- if (words_remaining > 0) {
- /* try using a block write */
- retval = stm32x_write_block(bank, buffer, offset, words_remaining);
- if (retval != ERROR_OK) {
- if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
- /* if block write failed (no sufficient working area),
- * we use normal (slow) single dword accesses */
- LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
- }
- } else {
- buffer += words_remaining * 2;
- address += words_remaining * 2;
- words_remaining = 0;
- }
- }
+ retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PG);
+ if (retval != ERROR_OK)
+ goto cleanup;
- if ((retval != ERROR_OK) && (retval != ERROR_TARGET_RESOURCE_NOT_AVAILABLE))
- return retval;
+ /* try using a block write */
+ retval = stm32x_write_block(bank, buffer, offset, words_remaining);
- while (words_remaining > 0) {
- uint16_t value;
- memcpy(&value, buffer + bytes_written, sizeof(uint16_t));
+ if (retval == ERROR_TARGET_RESOURCE_NOT_AVAILABLE) {
+ /* if block write failed (no sufficient working area),
+ * we use normal (slow) single halfword accesses */
+ LOG_WARNING("couldn't use block writes, falling back to single memory accesses");
- retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PG);
- if (retval != ERROR_OK)
- return retval;
- retval = target_write_u16(target, address, value);
- if (retval != ERROR_OK)
- return retval;
+ while (words_remaining > 0) {
+ uint16_t value;
+ memcpy(&value, buffer, sizeof(uint16_t));
- retval = stm32x_wait_status_busy(bank, 5);
- if (retval != ERROR_OK)
- return retval;
+ retval = target_write_u16(target, bank->base + offset, value);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
- bytes_written += 2;
- words_remaining--;
- address += 2;
- }
+ retval = stm32x_wait_status_busy(bank, 5);
+ if (retval != ERROR_OK)
+ goto reset_pg_and_lock;
- if (bytes_remaining) {
- uint16_t value = 0xffff;
- memcpy(&value, buffer + bytes_written, bytes_remaining);
+ words_remaining--;
+ buffer += 2;
+ offset += 2;
+ }
+ }
- retval = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_PG);
- if (retval != ERROR_OK)
- return retval;
- retval = target_write_u16(target, address, value);
- if (retval != ERROR_OK)
- return retval;
+reset_pg_and_lock:
+ retval2 = target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK);
+ if (retval == ERROR_OK)
+ retval = retval2;
- retval = stm32x_wait_status_busy(bank, 5);
- if (retval != ERROR_OK)
- return retval;
- }
+cleanup:
+ if (new_buffer)
+ free(new_buffer);
- return target_write_u32(target, stm32x_get_flash_reg(bank, STM32_FLASH_CR), FLASH_LOCK);
+ return retval;
}
static int stm32x_get_device_id(struct flash_bank *bank, uint32_t *device_id)
@@ -830,6 +799,9 @@ static int stm32x_get_device_id(struct flash_bank *bank, uint32_t *device_id)
} else if (((cpuid >> 4) & 0xFFF) == 0xC23) {
/* 0xC23 is M3 devices */
device_id_register = 0xE0042000;
+ } else if (((cpuid >> 4) & 0xFFF) == 0xC24) {
+ /* 0xC24 is M4 devices */
+ device_id_register = 0xE0042000;
} else {
LOG_ERROR("Cannot identify target as a stm32x");
return ERROR_FAIL;
@@ -843,19 +815,53 @@ static int stm32x_get_device_id(struct flash_bank *bank, uint32_t *device_id)
return retval;
}
-static int stm32x_probe(struct flash_bank *bank)
+static int stm32x_get_flash_size(struct flash_bank *bank, uint16_t *flash_size_in_kb)
{
struct target *target = bank->target;
+ uint32_t cpuid, flash_size_reg;
+
+ int retval = target_read_u32(target, 0xE000ED00, &cpuid);
+ if (retval != ERROR_OK)
+ return retval;
+
+ if (((cpuid >> 4) & 0xFFF) == 0xC20) {
+ /* 0xC20 is M0 devices */
+ flash_size_reg = 0x1FFFF7CC;
+ } else if (((cpuid >> 4) & 0xFFF) == 0xC23) {
+ /* 0xC23 is M3 devices */
+ flash_size_reg = 0x1FFFF7E0;
+ } else if (((cpuid >> 4) & 0xFFF) == 0xC24) {
+ /* 0xC24 is M4 devices */
+ flash_size_reg = 0x1FFFF7CC;
+ } else {
+ LOG_ERROR("Cannot identify target as a stm32x");
+ return ERROR_FAIL;
+ }
+
+ retval = target_read_u16(target, flash_size_reg, flash_size_in_kb);
+ if (retval != ERROR_OK)
+ return retval;
+
+ return retval;
+}
+
+static int stm32x_probe(struct flash_bank *bank)
+{
struct stm32x_flash_bank *stm32x_info = bank->driver_priv;
int i;
uint16_t flash_size_in_kb;
+ uint16_t max_flash_size_in_kb;
uint32_t device_id;
int page_size;
uint32_t base_address = 0x08000000;
-
stm32x_info->probed = 0;
stm32x_info->register_base = FLASH_REG_BASE_B0;
+ stm32x_info->user_data_offset = 10;
+ stm32x_info->option_offset = 0;
+
+ /* default factory protection level */
+ stm32x_info->default_rdp = 0x5AA5;
/* read stm32 device id register */
int retval = stm32x_get_device_id(bank, &device_id);
@@ -864,100 +870,86 @@ static int stm32x_probe(struct flash_bank *bank)
LOG_INFO("device id = 0x%08" PRIx32 "", device_id);
- /* get flash size from target. */
- retval = target_read_u16(target, 0x1FFFF7E0, &flash_size_in_kb);
- if (retval != ERROR_OK) {
- LOG_WARNING("failed reading flash size, default to max target family");
- /* failed reading flash size, default to max target family */
- flash_size_in_kb = 0xffff;
- }
-
- if ((device_id & 0xfff) == 0x410) {
- /* medium density - we have 1k pages
- * 4 pages for a protection area */
+ /* set page size, protection granularity and max flash size depending on family */
+ switch (device_id & 0xfff) {
+ case 0x410: /* medium density */
page_size = 1024;
stm32x_info->ppage_size = 4;
-
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors incorrect on revA */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash");
- flash_size_in_kb = 128;
- }
- } else if ((device_id & 0xfff) == 0x412) {
- /* low density - we have 1k pages
- * 4 pages for a protection area */
+ max_flash_size_in_kb = 128;
+ break;
+ case 0x412: /* low density */
page_size = 1024;
stm32x_info->ppage_size = 4;
-
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors incorrect on revA */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 32k flash");
- flash_size_in_kb = 32;
- }
- } else if ((device_id & 0xfff) == 0x414) {
- /* high density - we have 2k pages
- * 2 pages for a protection area */
+ max_flash_size_in_kb = 32;
+ break;
+ case 0x414: /* high density */
page_size = 2048;
stm32x_info->ppage_size = 2;
-
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors incorrect on revZ */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 512k flash");
- flash_size_in_kb = 512;
- }
- } else if ((device_id & 0xfff) == 0x418) {
- /* connectivity line density - we have 2k pages
- * 2 pages for a protection area */
+ max_flash_size_in_kb = 512;
+ break;
+ case 0x418: /* connectivity line density */
page_size = 2048;
stm32x_info->ppage_size = 2;
-
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors incorrect on revZ */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 256k flash");
- flash_size_in_kb = 256;
- }
- } else if ((device_id & 0xfff) == 0x420) {
- /* value line density - we have 1k pages
- * 4 pages for a protection area */
+ max_flash_size_in_kb = 256;
+ break;
+ case 0x420: /* value line density */
page_size = 1024;
stm32x_info->ppage_size = 4;
-
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors may be incorrrect on early silicon */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash");
- flash_size_in_kb = 128;
- }
- } else if ((device_id & 0xfff) == 0x428) {
- /* value line High density - we have 2k pages
- * 4 pages for a protection area */
+ max_flash_size_in_kb = 128;
+ break;
+ case 0x422: /* stm32f30x */
+ page_size = 2048;
+ stm32x_info->ppage_size = 2;
+ max_flash_size_in_kb = 256;
+ stm32x_info->user_data_offset = 16;
+ stm32x_info->option_offset = 6;
+ stm32x_info->default_rdp = 0x55AA;
+ break;
+ case 0x428: /* value line High density */
page_size = 2048;
stm32x_info->ppage_size = 4;
-
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors may be incorrrect on early silicon */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 128k flash");
- flash_size_in_kb = 128;
- }
- } else if ((device_id & 0xfff) == 0x430) {
- /* xl line density - we have 2k pages
- * 2 pages for a protection area */
+ max_flash_size_in_kb = 128;
+ break;
+ case 0x430: /* xl line density (dual flash banks) */
page_size = 2048;
stm32x_info->ppage_size = 2;
+ max_flash_size_in_kb = 1024;
stm32x_info->has_dual_banks = true;
+ break;
+ case 0x432: /* stm32f37x */
+ page_size = 2048;
+ stm32x_info->ppage_size = 2;
+ max_flash_size_in_kb = 256;
+ stm32x_info->user_data_offset = 16;
+ stm32x_info->option_offset = 6;
+ stm32x_info->default_rdp = 0x55AA;
+ break;
+ case 0x440: /* stm32f0x */
+ case 0x444:
+ page_size = 1024;
+ stm32x_info->ppage_size = 4;
+ max_flash_size_in_kb = 64;
+ stm32x_info->user_data_offset = 16;
+ stm32x_info->option_offset = 6;
+ stm32x_info->default_rdp = 0x55AA;
+ break;
+ default:
+ LOG_WARNING("Cannot identify target as a STM32 family.");
+ return ERROR_FAIL;
+ }
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors may be incorrrect on early silicon */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 1024k flash");
- flash_size_in_kb = 1024;
- }
+ /* get flash size from target. */
+ retval = stm32x_get_flash_size(bank, &flash_size_in_kb);
+
+ /* failed reading flash size or flash size invalid (early silicon),
+ * default to max target family */
+ if (retval != ERROR_OK || flash_size_in_kb == 0xffff || flash_size_in_kb == 0) {
+ LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming %dk flash",
+ max_flash_size_in_kb);
+ flash_size_in_kb = max_flash_size_in_kb;
+ }
+ if (stm32x_info->has_dual_banks) {
/* split reported size into matching bank */
if (bank->base != 0x08080000) {
/* bank 0 will be fixed 512k */
@@ -968,21 +960,13 @@ static int stm32x_probe(struct flash_bank *bank)
stm32x_info->register_base = FLASH_REG_BASE_B1;
base_address = 0x08080000;
}
- } else if ((device_id & 0xfff) == 0x440) {
- /* stm32f0x - we have 1k pages
- * 4 pages for a protection area */
- page_size = 1024;
- stm32x_info->ppage_size = 4;
+ }
- /* check for early silicon */
- if (flash_size_in_kb == 0xffff) {
- /* number of sectors incorrect on revZ */
- LOG_WARNING("STM32 flash size failed, probe inaccurate - assuming 64k flash");
- flash_size_in_kb = 64;
- }
- } else {
- LOG_WARNING("Cannot identify target as a STM32 family.");
- return ERROR_FAIL;
+ /* if the user sets the size manually then ignore the probed value
+ * this allows us to work around devices that have a invalid flash size register value */
+ if (stm32x_info->user_bank_size) {
+ LOG_INFO("ignoring flash probed value, using configured bank size");
+ flash_size_in_kb = stm32x_info->user_bank_size / 1024;
}
LOG_INFO("flash size = %dkbytes", flash_size_in_kb);
@@ -1035,163 +1019,182 @@ COMMAND_HANDLER(stm32x_handle_part_id_command)
static int get_stm32x_info(struct flash_bank *bank, char *buf, int buf_size)
{
- uint32_t device_id;
- int printed;
+ uint32_t dbgmcu_idcode;
/* read stm32 device id register */
- int retval = stm32x_get_device_id(bank, &device_id);
+ int retval = stm32x_get_device_id(bank, &dbgmcu_idcode);
if (retval != ERROR_OK)
return retval;
- if ((device_id & 0xfff) == 0x410) {
- printed = snprintf(buf, buf_size, "stm32x (Medium Density) - Rev: ");
- buf += printed;
- buf_size -= printed;
+ uint16_t device_id = dbgmcu_idcode & 0xfff;
+ uint16_t rev_id = dbgmcu_idcode >> 16;
+ const char *device_str;
+ const char *rev_str = NULL;
- switch (device_id >> 16) {
- case 0x0000:
- snprintf(buf, buf_size, "A");
- break;
+ switch (device_id) {
+ case 0x410:
+ device_str = "STM32F10x (Medium Density)";
- case 0x2000:
- snprintf(buf, buf_size, "B");
- break;
+ switch (rev_id) {
+ case 0x0000:
+ rev_str = "A";
+ break;
- case 0x2001:
- snprintf(buf, buf_size, "Z");
- break;
+ case 0x2000:
+ rev_str = "B";
+ break;
+
+ case 0x2001:
+ rev_str = "Z";
+ break;
+
+ case 0x2003:
+ rev_str = "Y";
+ break;
+ }
+ break;
+
+ case 0x412:
+ device_str = "STM32F10x (Low Density)";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
+ }
+ break;
+
+ case 0x414:
+ device_str = "STM32F10x (High Density)";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
- case 0x2003:
- snprintf(buf, buf_size, "Y");
- break;
+ case 0x1001:
+ rev_str = "Z";
+ break;
- default:
- snprintf(buf, buf_size, "unknown");
- break;
+ case 0x1003:
+ rev_str = "Y";
+ break;
}
- } else if ((device_id & 0xfff) == 0x412) {
- printed = snprintf(buf, buf_size, "stm32x (Low Density) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16) {
- case 0x1000:
- snprintf(buf, buf_size, "A");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
+ break;
+
+ case 0x418:
+ device_str = "STM32F10x (Connectivity)";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
+
+ case 0x1001:
+ rev_str = "Z";
+ break;
}
- } else if ((device_id & 0xfff) == 0x414) {
- printed = snprintf(buf, buf_size, "stm32x (High Density) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16) {
- case 0x1000:
- snprintf(buf, buf_size, "A");
- break;
-
- case 0x1001:
- snprintf(buf, buf_size, "Z");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
+ break;
+
+ case 0x420:
+ device_str = "STM32F100 (Low/Medium Density)";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
+
+ case 0x1001:
+ rev_str = "Z";
+ break;
}
- } else if ((device_id & 0xfff) == 0x418) {
- printed = snprintf(buf, buf_size, "stm32x (Connectivity) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16) {
- case 0x1000:
- snprintf(buf, buf_size, "A");
- break;
-
- case 0x1001:
- snprintf(buf, buf_size, "Z");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
+ break;
+
+ case 0x422:
+ device_str = "STM32F30x";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
+
+ case 0x1001:
+ rev_str = "Z";
+ break;
+
+ case 0x1003:
+ rev_str = "Y";
+ break;
+
+ case 0x2000:
+ rev_str = "B";
+ break;
}
- } else if ((device_id & 0xfff) == 0x420) {
- printed = snprintf(buf, buf_size, "stm32x (Value) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16) {
- case 0x1000:
- snprintf(buf, buf_size, "A");
- break;
-
- case 0x1001:
- snprintf(buf, buf_size, "Z");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
+ break;
+
+ case 0x428:
+ device_str = "STM32F100 (High Density)";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
+
+ case 0x1001:
+ rev_str = "Z";
+ break;
}
- } else if ((device_id & 0xfff) == 0x428) {
- printed = snprintf(buf, buf_size, "stm32x (Value HD) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16) {
- case 0x1000:
- snprintf(buf, buf_size, "A");
- break;
-
- case 0x1001:
- snprintf(buf, buf_size, "Z");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
+ break;
+
+ case 0x430:
+ device_str = "STM32F10x (XL Density)";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
}
- } else if ((device_id & 0xfff) == 0x430) {
- printed = snprintf(buf, buf_size, "stm32x (XL) - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16) {
- case 0x1000:
- snprintf(buf, buf_size, "A");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
+ break;
+
+ case 0x432:
+ device_str = "STM32F37x";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "A";
+ break;
+
+ case 0x2000:
+ rev_str = "B";
+ break;
}
- } else if ((device_id & 0xfff) == 0x440) {
- printed = snprintf(buf, buf_size, "stm32f0x - Rev: ");
- buf += printed;
- buf_size -= printed;
-
- switch (device_id >> 16) {
- case 0x1000:
- snprintf(buf, buf_size, "1.0");
- break;
-
- case 0x2000:
- snprintf(buf, buf_size, "2.0");
- break;
-
- default:
- snprintf(buf, buf_size, "unknown");
- break;
+ break;
+
+ case 0x440:
+ case 0x444:
+ device_str = "STM32F0xx";
+
+ switch (rev_id) {
+ case 0x1000:
+ rev_str = "1.0";
+ break;
+
+ case 0x2000:
+ rev_str = "2.0";
+ break;
}
- } else {
- snprintf(buf, buf_size, "Cannot identify target as a stm32x\n");
+ break;
+
+ default:
+ snprintf(buf, buf_size, "Cannot identify target as a STM32F0/1/3\n");
return ERROR_FAIL;
}
+ if (rev_str != NULL)
+ snprintf(buf, buf_size, "%s - Rev: %s", device_str, rev_str);
+ else
+ snprintf(buf, buf_size, "%s - Rev: unknown (0x%04x)", device_str, rev_id);
+
return ERROR_OK;
}
@@ -1311,36 +1314,46 @@ COMMAND_HANDLER(stm32x_handle_options_read_command)
return retval;
command_print(CMD_CTX, "Option Byte: 0x%" PRIx32 "", optionbyte);
- if (buf_get_u32((uint8_t *)&optionbyte, OPT_ERROR, 1))
+ int user_data = optionbyte;
+
+ if (optionbyte >> OPT_ERROR & 1)
command_print(CMD_CTX, "Option Byte Complement Error");
- if (buf_get_u32((uint8_t *)&optionbyte, OPT_READOUT, 1))
+ if (optionbyte >> OPT_READOUT & 1)
command_print(CMD_CTX, "Readout Protection On");
else
command_print(CMD_CTX, "Readout Protection Off");
- if (buf_get_u32((uint8_t *)&optionbyte, OPT_RDWDGSW, 1))
+ /* user option bytes are offset depending on variant */
+ optionbyte >>= stm32x_info->option_offset;
+
+ if (optionbyte >> OPT_RDWDGSW & 1)
command_print(CMD_CTX, "Software Watchdog");
else
command_print(CMD_CTX, "Hardware Watchdog");
- if (buf_get_u32((uint8_t *)&optionbyte, OPT_RDRSTSTOP, 1))
+ if (optionbyte >> OPT_RDRSTSTOP & 1)
command_print(CMD_CTX, "Stop: No reset generated");
else
command_print(CMD_CTX, "Stop: Reset generated");
- if (buf_get_u32((uint8_t *)&optionbyte, OPT_RDRSTSTDBY, 1))
+ if (optionbyte >> OPT_RDRSTSTDBY & 1)
command_print(CMD_CTX, "Standby: No reset generated");
else
command_print(CMD_CTX, "Standby: Reset generated");
if (stm32x_info->has_dual_banks) {
- if (buf_get_u32((uint8_t *)&optionbyte, OPT_BFB2, 1))
+ if (optionbyte >> OPT_BFB2 & 1)
command_print(CMD_CTX, "Boot: Bank 0");
else
command_print(CMD_CTX, "Boot: Bank 1");
}
+ command_print(CMD_CTX, "User Option0: 0x%02" PRIx8,
+ (user_data >> stm32x_info->user_data_offset) & 0xff);
+ command_print(CMD_CTX, "User Option1: 0x%02" PRIx8,
+ (user_data >> (stm32x_info->user_data_offset + 8)) & 0xff);
+
return ERROR_OK;
}
@@ -1348,9 +1361,9 @@ COMMAND_HANDLER(stm32x_handle_options_write_command)
{
struct target *target = NULL;
struct stm32x_flash_bank *stm32x_info = NULL;
- uint16_t optionbyte = 0xF8;
+ uint16_t optionbyte;
- if (CMD_ARGC < 4)
+ if (CMD_ARGC < 2)
return ERROR_COMMAND_SYNTAX_ERROR;
struct flash_bank *bank;
@@ -1371,34 +1384,41 @@ COMMAND_HANDLER(stm32x_handle_options_write_command)
if (ERROR_OK != retval)
return retval;
- /* REVISIT: ignores some options which we will display...
- * and doesn't insist on the specified syntax.
- */
-
- /* OPT_RDWDGSW */
- if (strcmp(CMD_ARGV[1], "SWWDG") == 0)
- optionbyte |= (1 << 0);
- else /* REVISIT must be "HWWDG" then ... */
- optionbyte &= ~(1 << 0);
-
- /* OPT_RDRSTSTOP */
- if (strcmp(CMD_ARGV[2], "NORSTSTOP") == 0)
- optionbyte |= (1 << 1);
- else /* REVISIT must be "RSTSTNDBY" then ... */
- optionbyte &= ~(1 << 1);
-
- /* OPT_RDRSTSTDBY */
- if (strcmp(CMD_ARGV[3], "NORSTSTNDBY") == 0)
- optionbyte |= (1 << 2);
- else /* REVISIT must be "RSTSTOP" then ... */
- optionbyte &= ~(1 << 2);
-
- if (CMD_ARGC > 4 && stm32x_info->has_dual_banks) {
- /* OPT_BFB2 */
- if (strcmp(CMD_ARGV[4], "BOOT0") == 0)
- optionbyte |= (1 << 3);
- else
- optionbyte &= ~(1 << 3);
+ retval = stm32x_read_options(bank);
+ if (ERROR_OK != retval)
+ return retval;
+
+ /* start with current options */
+ optionbyte = stm32x_info->option_bytes.user_options;
+
+ /* skip over flash bank */
+ CMD_ARGC--;
+ CMD_ARGV++;
+
+ while (CMD_ARGC) {
+ if (strcmp("SWWDG", CMD_ARGV[0]) == 0)
+ optionbyte |= (1 << 0);
+ else if (strcmp("HWWDG", CMD_ARGV[0]) == 0)
+ optionbyte &= ~(1 << 0);
+ else if (strcmp("NORSTSTOP", CMD_ARGV[0]) == 0)
+ optionbyte &= ~(1 << 1);
+ else if (strcmp("RSTSTNDBY", CMD_ARGV[0]) == 0)
+ optionbyte &= ~(1 << 1);
+ else if (strcmp("NORSTSTNDBY", CMD_ARGV[0]) == 0)
+ optionbyte &= ~(1 << 2);
+ else if (strcmp("RSTSTOP", CMD_ARGV[0]) == 0)
+ optionbyte &= ~(1 << 2);
+ else if (stm32x_info->has_dual_banks) {
+ if (strcmp("BOOT0", CMD_ARGV[0]) == 0)
+ optionbyte |= (1 << 3);
+ else if (strcmp("BOOT1", CMD_ARGV[0]) == 0)
+ optionbyte &= ~(1 << 3);
+ else
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ } else
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ CMD_ARGC--;
+ CMD_ARGV++;
}
if (stm32x_erase_options(bank) != ERROR_OK) {
@@ -1446,7 +1466,7 @@ static int stm32x_mass_erase(struct flash_bank *bank)
if (retval != ERROR_OK)
return retval;
- retval = stm32x_wait_status_busy(bank, 100);
+ retval = stm32x_wait_status_busy(bank, FLASH_ERASE_TIMEOUT);
if (retval != ERROR_OK)
return retval;
@@ -1544,7 +1564,7 @@ struct flash_driver stm32f1x_flash = {
.read = default_flash_read,
.probe = stm32x_probe,
.auto_probe = stm32x_auto_probe,
- .erase_check = default_flash_mem_blank_check,
+ .erase_check = default_flash_blank_check,
.protect_check = stm32x_protect_check,
.info = get_stm32x_info,
};